CHARACTERISTICS AND LIFE CIRCLE OF
STARS
THE STELLAR EVOLUTION
PHYSICS 115 W01
PHYSIC 115-W01
I.
FINAL TERM PAPER
DETAILS ABOUT STAR
A. Introduction
Stars are considered to be giant lighting sphere of plasma. There are actually many
of them in the univers
Chapter 3
Figure 3-8
True Pressure versus Indicated Pressure for Commonly used Gases, 104 to 101 Torr
1
10-1
Kr
Ar
True Pressure (Torr)
10-2
Ne
N2, Air
CO2
He
O2
D2
freon 22
freon 12
10-3
CH4
Use this data only when the
Convectron Gauge axis is horizontal
Vacuum Science, Apparatus, and Experiments
AP 4018y Applied Physics Laboratory
Dept. of Applied Physics and Applied Mathematics
Columbia University
New York, NY 10027 USA
<mailto:[email protected]>
January 14, 2010
Overview. Using a mechanical pump and a
Technical Information
Table 4-3 lists relative gauge sensitivities (rX) for various gases. The values
listed are averages of several gauges and several references from literature
(Table II, Ionization Gauge Sensitivities As Reported in the Literature, fro
Updated Feb.2, 2016
1. VACUUM - Checklist of main measurements to take and data to plot and analyze.
Week 1 pumping speed and controlled leak, on any station
1.
2.
3.
4.
5.
6.
Pumping speed of roughing pump
Make a sketch of experimental set-up, paying att
Lattice Vibrations: two atoms/ions in the
unit cell
u n 2 u n 1
un
u n +1 u n + 2
k
The dotted lines represent planes with different atoms/ions. This
case may be described by vibrations of a
linear chain with a basis
Linear chain with a basis of two
The s
Lattice Vibrations: harmonic
approximation
In a system with a single Bravais lattice there are
3N distinct normal modes: 2N transverse and N longitudinal
In a system with p Bravais lattices there are
3pN distinct normal modes
Displacements in each norm
Why Lattice Vibrations
The assumption of ions/atoms at fixed positions
contradicts the Heisenberg principle
The X-ray spots in diffraction patterns have
widths that depend on temperature
Marked temperature dependence of a multitude of
properties, such as
Cohesive Energies:
Cohesive Energy:
The energy required to go from the ground state of
the crystal to its separated constituent parts.
For covalent solids and metals
constituent parts are individual atoms
Evaluations of cohesive energies assume
the ions/a
Magnetism
Practice Problems
PSI AP Physics B
Name_
1. A straight wire carries a current down. What is the direction of the magnetic field at the point to
the East from the wire?
(A) West
(B) East
(C) North
(D) South
(E) Down
2. A loop of wire carries a cu
AP PHYSICS 2
SUMMER ASSIGNMENT
NAME:
Welcome to the selected group of worldwide high school students that will take AP Physics 2. This
class will be the equivalent of a college-level physics course. It will span virtually every topic following an
introduc
ADVANCED PLACEMENT PHYSICS 2 EQUATIONS, EFFECTIVE 2015
CONSTANTS AND CONVERSION FACTORS
Proton mass, m p = 1.67 10 -27 kg
Neutron mass, mn = 1.67 10 -27 kg
1 electron volt, 1 eV = 1.60 10 -19 J
Electron mass, me = 9.11 10 -31 kg
c = 3.00 108 m s
Speed of
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AP PHYSICS 2
GRADE IMPROVEMENT FORM
NAME:
PERIOD:
ASSIGNMENT NAME:
Identify the question number.
Divide new questions with a neatly traced horizontal line.
You will be able to make up half the points of each question.
CORRECT SOLUTION
WHAT PHYSICS DID YOU
Spherical Mirrors
03/18/2016
Siraat Zafar
Instructor: Q. Wang
ID # 1005424
Physics W09L
Objective
The objective of this experiment was to study the reflection of light by spherical
mirrors and to measure the focal length and radius of curvature of a conca
Electrostatics
3/11/16
Siraat Zafar
Instructor: Q. Wang
ID # 1005424
Physics W09L
8:00am-9:50am
Objective/Aim
The objective of this experiment was to explore the characteristics of
electrostatics. Including: the properties of charge, the amount of charge,
Thin Lenses
04/10/2016
Siraat Zafar
Professor Wang
PHYS-185L
4/22/16
Objective/Aim
The objective of this experiment was to find the focal lengths of 4
different concave lenses using three different methods as well as to
find the focal length of a convex l
Youngs Double Slit
04/17/2015
Uzayr Arif
1020165
Objective
The objective of this experiment was to find distance between the two slits
through which light was passing.
Theory
Light is known to have properties of a particle and wave. It was proven
that lig
Experiment 10: Charge to mass ratio of electron (e/me)
Siraat Zafar
Professor Wang
PHYS-185L
4/22/16
Objective
In order to understand the concept of the motion of an electron in a uniform magnetic
field, the Lorentz force generator was used. After measuri
Chapter 11: Oscillations and Waves
11-1 Simple Harmonic Motion- Spring Oscillations
When an object vibrates or oscillates back and forth over the same path, each
oscillation taking the same amount of time, the motion is periodic
Any spring has a natural l
Chapter 14: Heat
14-1 Heat as Energy Transfer
The unit of heat is known as the calorie and is defined as the amount of heat necessary to raise the temperature of 1
gram of water by 1 degree Celsius
o 1 kcal is the heat needed to raise the temperature of 1
Chapter 17: Electric Potential
This chapter serves to teach the concepts of electrical potential (electric voltage, V), electrical potential energy (U=
J), and electrical work (which is the same as electric energy, (W = J)
All these concepts are scalars
1
Chapter 18 and Chapter 19: Electrical and DC Currents
18-3 Ohms Law
V Voltage Electric Potential V
I Current Ampere/Amp A
R Electrical Resistance Ohms
Ohms Law:
V =IR
Current flows from the positive terminal to the negative
Current is also the flow of el
Chapter 22: Electromagnetic Waves
22-3 Light as an Electromagnetic Wave and the Electromagnetic Spectrum
The speed at which EM waves are predicted to travel 3.00 x 10 8 m/s is the same as the measured speed of light
c=f
E=hf
F is the frequency of the wave
Chapter 10: Fluids
10-1 Phases of Matter
A solid matins a fixed size and shape so it requires a large force to change the volume or shape of a solid
A liquid doesnt maintain the fixed shape, but it is not readily compressible
A gas has neither a fixed sha